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authorLinus Torvalds <torvalds@linux-foundation.org>2021-04-30 13:01:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-04-30 13:01:02 -0700
commit592fa9532d4e4a7590ca383fd537eb4d53fa585a (patch)
tree48ead2d9a235f00fb2635613b1ed96e6b7d4bd4b /include
parentefd8929b9eec1cde120abb36d76dd00ff6711023 (diff)
parenta80f24945fcfdff31bdf04837145e56570741a67 (diff)
Merge branch 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang: - new drivers for Silicon Labs CP2615 and the HiSilicon I2C unit - bigger refactoring for the MPC driver - support for full software nodes - no need to work around with only properties anymore - we now have 'devm_i2c_add_adapter', too - sub-system wide fixes for the RPM refcounting problem which often caused a leak when an error was encountered during probe - the rest is usual driver updates and improvements * 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (77 commits) i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching i2c: mediatek: Fix wrong dma sync flag i2c: mediatek: Fix send master code at more than 1MHz i2c: sh7760: fix IRQ error path i2c: i801: Add support for Intel Alder Lake PCH-M i2c: core: Fix spacing error by checkpatch i2c: s3c2410: simplify getting of_device_id match data i2c: nomadik: Fix space errors i2c: iop3xx: Fix coding style issues i2c: amd8111: Fix coding style issues i2c: mpc: Drop duplicate message from devm_platform_ioremap_resource() i2c: mpc: Use device_get_match_data() helper i2c: mpc: Remove CONFIG_PM_SLEEP ifdeffery i2c: mpc: Use devm_clk_get_optional() i2c: mpc: Update license and copyright i2c: mpc: Interrupt driven transfer i2c: sh7760: add IRQ check i2c: rcar: add IRQ check i2c: mlxbf: add IRQ check i2c: jz4780: add IRQ check ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/i2c.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 56622658b215..e8f2ac8c9c3d 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -51,6 +51,9 @@ struct module;
struct property_entry;
#if IS_ENABLED(CONFIG_I2C)
+/* Return the Frequency mode string based on the bus frequency */
+const char *i2c_freq_mode_string(u32 bus_freq_hz);
+
/*
* The master routines are the ones normally used to transmit data to devices
* on a bus (or read from them). Apart from two basic transfer functions to
@@ -306,6 +309,8 @@ struct i2c_driver {
* userspace_devices list
* @slave_cb: Callback when I2C slave mode of an adapter is used. The adapter
* calls it to pass on slave events to the slave driver.
+ * @devres_group_id: id of the devres group that will be created for resources
+ * acquired when probing this device.
*
* An i2c_client identifies a single device (i.e. chip) connected to an
* i2c bus. The behaviour exposed to Linux is defined by the driver
@@ -334,6 +339,7 @@ struct i2c_client {
#if IS_ENABLED(CONFIG_I2C_SLAVE)
i2c_slave_cb_t slave_cb; /* callback for slave mode */
#endif
+ void *devres_group_id; /* ID of probe devres group */
};
#define to_i2c_client(d) container_of(d, struct i2c_client, dev)
@@ -391,7 +397,7 @@ static inline bool i2c_detect_slave_mode(struct device *dev) { return false; }
* @platform_data: stored in i2c_client.dev.platform_data
* @of_node: pointer to OpenFirmware device node
* @fwnode: device node supplied by the platform firmware
- * @properties: additional device properties for the device
+ * @swnode: software node for the device
* @resources: resources associated with the device
* @num_resources: number of resources in the @resources array
* @irq: stored in i2c_client.irq
@@ -415,7 +421,7 @@ struct i2c_board_info {
void *platform_data;
struct device_node *of_node;
struct fwnode_handle *fwnode;
- const struct property_entry *properties;
+ const struct software_node *swnode;
const struct resource *resources;
unsigned int num_resources;
int irq;
@@ -687,6 +693,8 @@ struct i2c_adapter_quirks {
#define I2C_AQ_NO_ZERO_LEN_READ BIT(5)
#define I2C_AQ_NO_ZERO_LEN_WRITE BIT(6)
#define I2C_AQ_NO_ZERO_LEN (I2C_AQ_NO_ZERO_LEN_READ | I2C_AQ_NO_ZERO_LEN_WRITE)
+/* adapter cannot do repeated START */
+#define I2C_AQ_NO_REP_START BIT(7)
/*
* i2c_adapter is the structure used to identify a physical i2c bus along
@@ -844,6 +852,7 @@ static inline void i2c_mark_adapter_resumed(struct i2c_adapter *adap)
*/
#if IS_ENABLED(CONFIG_I2C)
int i2c_add_adapter(struct i2c_adapter *adap);
+int devm_i2c_add_adapter(struct device *dev, struct i2c_adapter *adapter);
void i2c_del_adapter(struct i2c_adapter *adap);
int i2c_add_numbered_adapter(struct i2c_adapter *adap);